D4 SDV6 Engine Failure

[QUOTE=dirvine;3192740]

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Originally Posted by Discodicky

Just thinking about this.



We used to bump up the oil pressure of a BMC "A" and "B" series racing engine by increasing the effective length of the spring with the addition of spacer shims.

Other way was to fit a Cooper S 5 vane pump. I am surprised the oil pressure is so low. On my Cooper S it was 55-60 PSI! Do motors now run on lower pressures? If so what is the reasoning behind this? Just interested.

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Clearances are much tighter now, pressure was higher to keep film in place. Tighter tolerances require less.

I’d also hazard a guess and say higher pressure = more drag.

Agreed more drag= less fuel efficient. But - I'd trade a bit of fuel efficiency for better lubrication on an engine with known bearing problems in a heartbeat.
So tend to agree with LR time and was considering using Penrite HPR 5 in my non DPF 3.0SDV6

Attachment 185568

I recently purchased some filters from a forum member who sold his 3.0 SDV6.. not realising there was a difference between the D3 2.7 oil filter and the 3.0 D4 filter.. the D4 filter is the small 1 in the picture..

Not being a filter flow expert I can only wonder how you can increase engine HP and KW but shrink the filter element.. altho the D4 element is open at both ends unlike the D3 filter which has the nipple on the end as a bypass of sorts i would assume.
They also increased the oil change interval on the D4 as well from what i can remember.
Just an observation more than anything else.

Bulletman

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Originally Posted by Bulletman

Attachment 185568
D3 filter which has the nipple on the end as a bypass of sorts i would assume.

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The nipple in on the D3 filter plugs a drain hole. As you undo the housing it pops free and lets the filter drain. The bypass valve is in the top/end of the cap.

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Originally Posted by GrahamH

I have a 2015 Disco 4 TDV6 which seized at 66,000Km (crankshaft did not break).

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Contrary to youtubers crankshafts in the real world rarely break on disco 3 or 4 models. Out of countless amounts of failed engines at least 30 or 40, I have had 2 or 3 with broken crankshafts.

I have had conrods punched and jammed in the sides of blocks, crankshafts that had turned bright blue, conrods punched through the bottom sump, conrods twisted like play dough and wrapped around a crankshaft, oil filters that got so hot the plastic filter turned to molten plastic.

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Originally Posted by DazzaTD5

Contrary to youtubers crankshafts in the real world rarely break on disco 3 or 4 models. Out of countless amounts of failed engines at least 30 or 40, I have had 2 or 3 with broken crankshafts.

I have had conrods punched and jammed in the sides of blocks, crankshafts that had turned bright blue, conrods punched through the bottom sump, conrods twisted like play dough and wrapped around a crankshaft, oil filters that got so hot the plastic filter turned to molten plastic.

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So it’s still crankshaft related Eg bearings seizing etc, but sure, they didn’t snap. Still a crankshaft fault none the less.

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Originally Posted by DiscoJeffster

So it’s still crankshaft related Eg bearings seizing etc, but sure, they didn’t snap. Still a crankshaft fault none the less.

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No... the fault is Mondays and football. (apparently)

I guess the VW fault for **** engines is Beer and blutwurst day

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Originally Posted by DazzaTD5

Contrary to youtubers crankshafts in the real world rarely break on disco 3 or 4 models. Out of countless amounts of failed engines at least 30 or 40, I have had 2 or 3 with broken crankshafts.

I have had conrods punched and jammed in the sides of blocks, crankshafts that had turned bright blue, conrods punched through the bottom sump, conrods twisted like play dough and wrapped around a crankshaft, oil filters that got so hot the plastic filter turned to molten plastic.

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WOW.. you have seen 30 - 40 failed tdv6 or sdv6 engines .. thats insane amount, especially given they are not the most popular car on the road..
I know your a highly regarded LR repairer , but there are others in Perth who also service LR so im guessing you dont see every LR in the area .. but those numbers must throw the supposed failure rate quoted by LR out the window.. even if you have serviced 1000 different cars with those engines that 3 - 4%

Certainly opens ones eyes thats for sure

Bulletman

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Originally Posted by Bulletman

WOW.. you have seen 30 - 40 failed tdv6 or sdv6 engines .. thats insane amount, especially given they are not the most popular car on the road..
I know your a highly regarded LR repairer , but there are others in Perth who also service LR so im guessing you dont see every LR in the area .. but those numbers must throw the supposed failure rate quoted by LR out the window.. even if you have serviced 1000 different cars with those engines that 3 - 4%

Certainly opens ones eyes thats for sure

Bulletman

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And to add,the local Indies around here do lots of them as well.

The % of failures is a lot higher than many think,although hard to quantify.
FWIW, without counting RRS,or D5,the number of D3/D4 sold would be lucky to be 2K a year in Aus,so say 20K,plus a handful of D5, and RRS,all with the V6,either 2.7 or 3.0L.
So total around maybe 25K,at a wild guess,or 30K.

Even 10% of 30K is only 3K.
My guess is a lot more than 3K have had engines changed,remembering this issue has been on going for many years.Some vehicles are on their third engines.

Certainly a lot less sold than say something like the 1-VD,with well over 250K sold over the years,in Aus.

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Originally Posted by scarry

And to add,the local Indies around here do lots of them as well.

The % of failures is a lot higher than many think,although hard to quantify.
FWIW, without counting RRS,or D5,the number of D3/D4 sold would be lucky to be 2K a year in Aus,so say 20K,plus a handful of D5, and RRS,all with the V6,either 2.7 or 3.0L.
So total around maybe 25K,at a wild guess,or 30K.

Even 10% of 30K is only 3K.
My guess is a lot more than 3K have had engines changed,remembering this issue has been on going for many years.Some vehicles are on their third engines.

Certainly a lot less sold than say something like the 1-VD,with well over 250K sold over the years,in Aus.

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Mmmm ... i was half contemplating a D5 to replace the D3 , even tho i dont think their mother could love the look of them, but i did think they would have sorted the engine issues by then... maybe i need to rethink my thought pattern..
I do see the D5 sdv6 has figures close to the 4.4 TDV8 in the L322..

Anyway hopefully i get another couple of years out of the D3 and then i can look at its replacement.

Bulletman